US20150008398A1 - Organic light-emitting display device and method of manufacturing the same - Google Patents
Organic light-emitting display device and method of manufacturing the same Download PDFInfo
- Publication number
- US20150008398A1 US20150008398A1 US14/224,707 US201414224707A US2015008398A1 US 20150008398 A1 US20150008398 A1 US 20150008398A1 US 201414224707 A US201414224707 A US 201414224707A US 2015008398 A1 US2015008398 A1 US 2015008398A1
- Authority
- US
- United States
- Prior art keywords
- layer
- organic light
- disposed
- auxiliary electrode
- anodes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 239000012044 organic layer Substances 0.000 claims abstract description 87
- 239000000758 substrate Substances 0.000 claims abstract description 28
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 239000010410 layer Substances 0.000 claims description 303
- 238000002347 injection Methods 0.000 claims description 41
- 239000007924 injection Substances 0.000 claims description 41
- 230000005525 hole transport Effects 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 16
- 239000003086 colorant Substances 0.000 claims description 6
- 102100027287 Serpin H1 Human genes 0.000 description 22
- 239000004065 semiconductor Substances 0.000 description 15
- 101000836383 Homo sapiens Serpin H1 Proteins 0.000 description 11
- 108010038679 colligin Proteins 0.000 description 11
- 239000010408 film Substances 0.000 description 8
- 239000011229 interlayer Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 239000010409 thin film Substances 0.000 description 6
- 230000003247 decreasing effect Effects 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 229910052814 silicon oxide Inorganic materials 0.000 description 4
- 239000004642 Polyimide Substances 0.000 description 3
- 229910004205 SiNX Inorganic materials 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 229920001721 polyimide Polymers 0.000 description 3
- UMIVXZPTRXBADB-UHFFFAOYSA-N benzocyclobutene Chemical compound C1=CC=C2CCC2=C1 UMIVXZPTRXBADB-UHFFFAOYSA-N 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 238000007641 inkjet printing Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- OMIHGPLIXGGMJB-UHFFFAOYSA-N 7-oxabicyclo[4.1.0]hepta-1,3,5-triene Chemical class C1=CC=C2OC2=C1 OMIHGPLIXGGMJB-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229920012266 Poly(ether sulfone) PES Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- RHZWSUVWRRXEJF-UHFFFAOYSA-N indium tin Chemical compound [In].[Sn] RHZWSUVWRRXEJF-UHFFFAOYSA-N 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/805—Electrodes
- H10K59/8052—Cathodes
- H10K59/80522—Cathodes combined with auxiliary electrodes
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/14—Carrier transporting layers
-
- H01L51/5228—
-
- H01L27/3211—
-
- H01L51/56—
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/805—Electrodes
- H10K50/81—Anodes
- H10K50/814—Anodes combined with auxiliary electrodes, e.g. ITO layer combined with metal lines
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/805—Electrodes
- H10K50/82—Cathodes
- H10K50/824—Cathodes combined with auxiliary electrodes
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/1201—Manufacture or treatment
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/122—Pixel-defining structures or layers, e.g. banks
Definitions
- the present invention relates to an organic light-emitting display device and a method of manufacturing the same.
- Organic light-emitting display devices include a plurality of pixels. Each pixel includes a first electrode, a second electrode, and an organic layer disposed between the first electrode and the second electrode. The organic layer may emit light having a luminance level corresponding to an electric current flowing between the first electrode and the second electrode. The organic light-emitting display devices display a desired image by controlling the electric current flowing between the first electrode and the second electrode.
- an organic light-emitting display device includes a plurality of anodes and an auxiliary electrode disposed on the substrate.
- the auxiliary electrode is separated from the plurality of the anodes.
- the organic light-emitting display device further includes an organic layer disposed on the plurality of the anodes, an opening penetrating the organic layer to expose the auxiliary electrode, and a cathode disposed on the organic layer and the exposed auxiliary electrode.
- the cathode is electrically connected to the auxiliary electrode.
- the opening has a first width at a proximal end and a second width at a distal end. The distal end is closer to the auxiliary electrode than the proximal end. The first width is smaller than the second width.
- an organic light-emitting display device includes a substrate including a display area and a non-display area.
- the organic light-emitting display device further includes a plurality of anodes on the display area of the substrate.
- the organic light-emitting display device further includes an auxiliary electrode disposed on both the display area and the non-display area of the substrate.
- the auxiliary electrode is separated from the plurality of the anodes.
- An organic layer is disposed on the plurality of the anodes.
- An opening penetrates the organic layer to expose the auxiliary electrode.
- the organic light-emitting display further includes a cathode disposed on the organic layer and the exposed auxiliary electrode.
- the auxiliary electrode includes end portions disposed in the non-display area.
- a method of manufacturing an organic light-emitting display device is provided.
- a plurality of anodes and an auxiliary electrode are formed on a substrate.
- the auxiliary electrode is separated from the plurality of the anodes.
- An organic layer is formed on the plurality of the anodes and the auxiliary electrode.
- An opening is formed in the organic layer by applying a voltage to the auxiliary electrode. The opening exposes the auxiliary electrode.
- a cathode is formed on the organic layer and the exposed auxiliary electrode. The cathode is electrically connected to the exposed auxiliary electrode.
- FIG. 1 is a plan view of an organic light-emitting display device according to an exemplary embodiment of the present invention
- FIG. 2 is a cross-sectional view of the organic light-emitting display device taken along the line II-II′ of FIG. I;
- FIG. 3 is a plan view illustrating the arrangement of a plurality of anodes and an auxiliary electrode according to an exemplary embodiment of the present invention
- FIG. 4 is an enlarged view of a region IV of FIG. 2 ;
- FIG. 5 is a flowchart illustrating a method of manufacturing an organic light-emitting display device according to an exemplary embodiment of the present invention
- FIG. 6 is a cross-sectional view of the organic light-emitting display device, illustrating an operation of forming a plurality of anodes and an auxiliary electrode according to an exemplary embodiment of the present invention
- FIG. 7 is a cross-sectional view of the organic light-emitting display device, illustrating an operation of forming a pixel defining layer according to an exemplary embodiment of the present invention
- FIG. 8 is a flowchart illustrating an operation of forming an organic layer according to an exemplary embodiment of the present invention.
- FIG. 9 is a cross-sectional view of the organic light-emitting display device, illustrating an operation of forming a hole injection layer and an operation of forming a hole transport layer according to an exemplary embodiment of the present invention
- FIG. 10 is a cross-sectional view of the organic light-emitting display device, illustrating an operation of forming organic light-emitting layers according to an exemplary embodiment of the present invention
- FIG. 11 is a cross-sectional view of the organic light-emitting display device, illustrating an operation of forming an electron transport layer and an operation of forming an electron injection layer according to an exemplary embodiment of the present invention
- FIG. 12 is a cross-sectional view of the organic light-emitting display device, illustrating an operation of forming an opening in the organic layer according to an exemplary embodiment of the present invention
- FIG. 13 is a plan view illustrating an arrangement of a plurality of anodes and an auxiliary electrode according to an exemplary embodiment of the present invention
- FIG. 14 is a cross-sectional view of an organic light-emitting display device according to an exemplary embodiment of the present invention.
- FIG. 15 is an enlarged view of a region XV of FIG. 14 ;
- FIG. 16 is a cross-sectional view of an organic light-emitting display device according to an exemplary embodiment of the present invention.
- FIG. 17 is an enlarged view of a region XVII of FIG. 16 ;
- FIG. 18 is a flowchart illustrating a method of manufacturing an organic light-emitting display device according to an exemplary embodiment of the present invention.
- FIG. 1 is a plan view of an organic light-emitting display device 100 according to an exemplary embodiment of the present invention
- the organic light-emitting display device 100 includes a plurality of pixels (P 1 , P 2 , P 3 ). Each of the pixels (P 1 , P 2 , P 3 ) emits light, and the organic light-emitting display device 100 displays an image by controlling the luminance of light emitted from each of the pixels (P 1 , P 2 , P 3 ).
- the pixels (P 1 , P 2 , P 3 ) are arranged in a matrix pattern, but the arrangement pattern of the pixels (P 1 , P 2 , P 3 ) is not limited to the matrix pattern.
- the pixels (P 1 , P 2 , P 3 ) include first pixels P 1 , second pixels P 2 , and third pixels P 3 .
- the first through third pixels P 1 through P 3 may emit light of different colors.
- the first pixels P 1 may emit red light
- the second pixels P 2 may emit green light
- the third pixels P 3 may emit blue light.
- the present invention is not limited thereto.
- One first pixel P 1 , one second pixel P 2 , and one third pixel P 3 which are adjacent to each other may collectively function as a unit for displaying an image on the organic light-emitting display device 100 .
- FIG. 2 is a cross-sectional view of the organic light-emitting display device 100 taken along the line II-II′ of FIG. 1 .
- the organic light-emitting display device 100 includes a substrate 10 , a plurality of anodes (A 1 , A 2 , A 3 ), an auxiliary electrode CB, an organic layer 70 , and a cathode C.
- the substrate 10 is plate-shaped and supports other structures formed thereon.
- the substrate 10 may be formed of an insulating material such as, but is not limited to, glass, polyethylene terephthalate (PET), polycarbonate (PC), polyethersulfone (PES), polyimide (PI) or polymethylmethacrylate (PMMA).
- the substrate 10 may include a flexible material.
- the anodes (A 1 , A 2 , A 3 ) are formed on the substrate 10 .
- Each of the anodes (A 1 , A 2 , A 3 ) is connected to a thin-film transistor T which will be described later, and an electric current flowing through the organic layer 70 is controlled by a signal transmitted from the thin-film transistor T.
- the anodes (A 1 , A 2 , A 3 ) may be reflective.
- the anodes (A 1 , A 2 , A 3 ) may be formed of materials including, but are not limited to, silver (Ag)/indium tin oxide (ITO), ITO/Ag/ITO, molybdenum (Mo)/ITO, aluminum (Al)/ITO, or titanium (Ti)/ITO.
- the anodes (A 1 , A 2 , A 3 ) reflect light generated from the organic layer 70 in an upward direction.
- the anodes include a first anode A 1 , a second anode A 2 , and a third anode A 3 .
- the first anode A 1 is disposed in each of the first pixels P 1
- the second anode A 2 is disposed in each of the second pixels P 2
- the third anode A 3 is disposed in each of the third pixels P 3 .
- the auxiliary electrode CB is disposed on the substrate 10 and is separated from the anodes (A 1 , A 2 , A 3 ).
- the auxiliary electrode CB is formed of substantially the same material as the anodes (A 1 , A 2 , A 3 ).
- the auxiliary electrode CB and the anodes (A 1 , A 2 , A 3 ) may be simultaneously formed of substantially the same material by in the same process.
- the present invention is not limited thereto.
- the auxiliary electrode CB may be electrically connected to the cathode C.
- the auxiliary electrode CB may be formed of a material with lower resistivity than the cathode C.
- the auxiliary electrode CB is electrically connected to the cathode C thereby reducing a voltage drop of a voltage applied to the cathode C due to the internal resistance of the cathode C.
- FIG. 3 is a plan view of the organic light-emitting display device 100 , illustrating an arrangement of the anodes (A 1 , A 2 , A 3 ) and the auxiliary electrode CB according to an exemplary embodiment of the present invention.
- the arrangement of the anodes is substantially the same as the arrangement of the pixels (P 1 , P 2 , P 3 ).
- the first anode A 1 is disposed in the first pixel P 1 .
- the second anode A 2 is disposed in the second pixel P 2 .
- the third anode A 3 is disposed in the third pixel P 3 .
- the auxiliary electrode CB is arranged in a meshed structure.
- One first anode A 1 , one second anode A 2 and one third anode A 3 are disposed inside a space surrounded by the auxiliary electrode CB.
- the auxiliary electrode CB is disposed between two neighboring anodes (A 1 , A 2 , A 3 ).
- the present invention is not limited thereto, and the shape of the auxiliary electrode CB may vary.
- the auxiliary electrode CB includes a plurality of end portions CBE.
- the end portions CBE are disposed in a non-display area NDA.
- the end portions CBE are regions of the auxiliary electrode CB which extend to the non-display area NDA.
- the organic light-emitting display device 100 includes a display area DA which displays an image and the non-display area NDA which surrounds the display area DA.
- the pixels (P 1 , P 2 , P 3 ) and a plurality of pixel electrodes i.e., the anodes (A 1 , A 2 , A 3 )
- the non-display area NDA may surround the outside of the display area DA.
- a voltage may be applied between two end portions CBE disposed adjacent to both sides of the display area DA.
- a pixel defining layer 60 which will be described later need not be formed on the end portions CBE.
- the end portions CBE may be pad portions (CBP 1 , CBP 2 ) formed by increasing a width of the auxiliary electrode CB. All of the end portions CBE may be the pad portions (CBP 1 , CBP 2 ). However, the present invention is not limited thereto, and only some of the end portions CBE may be the pad portions (CBP 1 , CBP 2 ). Since the pad portions (CBP 1 , CBP 2 ) are formed by increasing the width of the auxiliary electrode CB, a voltage may be applied to the auxiliary electrode CB by applying the voltage to the pad portions (CBP 1 , CBP 2 ).
- the pad portions include a first pad portion CBP 1 and a second pad portion CBP 2 which are formed at different end portions CBE.
- the display area DA is disposed between the first pad portion CBP 1 and the second pad portion CBP 2 .
- An electric potential is applied between the first pad portion CBP 1 and the second pad portion CBP 2 , and thus an electric current flows evenly through all regions of the auxiliary electrode CB. Accordingly, heat may be generated evenly from the auxiliary electrode CB, thereby forming a plurality of openings OP.
- Each opening OP may have substantially the same size as other openings.
- the organic layer 70 is interposed between the anodes (A 1 , A 2 , A 3 ) and the cathode C.
- the organic layer 70 emits light having a luminance level corresponding to an electric current flowing between the anodes (A 1 , A 2 , A 3 ) and the cathode C.
- the auxiliary electrode CB is disposed in the opening OP where the organic layer 70 does not exist on the substrate 10 .
- the auxiliary electrode CB and the cathode C is electrically connected to each other.
- the opening OP will be described in more detail later with reference to FIG. 4 .
- the organic layer 70 includes a hole injection layer 71 , a hole transport layer 72 , an electron transport layer 73 , an electron injection layer 74 , and organic light-emitting layers ( 75 a, 75 b, 75 c ).
- the holes supplied from the anodes (A 1 , A 2 , A 3 ) are injected into the hole injection layer 71 disposed on the anodes (A 1 , A 2 , A 3 ).
- the injected holes are transported to the organic light-emitting layers ( 75 a, 75 b, 75 c ) through the hole transport layer 72 .
- the hole transport layer 72 is disposed on the hole injection layer 71 .
- the electrons supplied from the cathode C are injected into the electron injection layer 74 .
- the injected electrons are transported to the organic light-emitting layers ( 75 a, 75 b, 75 c ) through the electron transport layer 73 .
- the electron injection layer 74 is disposed on the electron transport layer 73 .
- the organic light-emitting layers ( 75 a, 75 b, 75 c ) are interposed between the electron transport layer 73 and the hole transport layer 72 .
- the hole injection layer 71 , the hole transport layer 72 , the electron transport layer 73 and the electron injection layer 74 may be formed on the display area DA of the organic light-emitting display device 100 .
- Such layers 71 to 74 need not be subject to a patterning process using a mask. Alternatively, such layers 71 to 74 may be patterned using a mask.
- the organic layer 70 is not limited to have such four layers 71 to 74 .
- at least one layer of the hole injection layer 71 , the hole transport layer 72 , the electron transport layer 73 and the electron injection layer 74 may be omitted from the organic layer 70 .
- the organic layer 70 may include only one layer among the hole injection layer 71 , the hole transport layer 72 , the electron transport layer 73 , and the electron injection layer 74 .
- the organic light-emitting layers ( 75 a, 75 b, 75 c ) are disposed between the hole transport layer 72 and the electron transport layer 73 .
- Each of the organic light-emitting layers ( 75 a, 75 b, 75 c ) emits light having a luminance level corresponding to the magnitude of an electric current flowing therethrough in response to an electric field applied between the anodes (A 1 , A 2 , A 3 ) and the cathode C.
- the organic light-emitting layers ( 75 a, 75 b, 75 c ) may emit light corresponding to the energy generated by a change in an energy level of excitons formed by the combination of holes and electrons.
- the organic light-emitting layers ( 75 a, 75 b, 75 c ) are formed on the anodes (A 1 , A 2 , A 3 ) by a deposition or printing method using a mask.
- the organic light-emitting layers ( 75 a, 75 b, 75 c ) are not be exposed through the opening OP. Therefore, the organic light-emitting layers ( 75 a, 75 b, 75 c ) need not contact the cathode C through the opening OP.
- the organic light-emitting layers ( 75 a, 75 b, 75 c ) include a first organic light-emitting layer 75 a, a second organic light-emitting layer 75 b, and a third organic light-emitting layer 75 c.
- the first organic light-emitting layer 75 a is disposed on the first anode A 1 and may emit red light.
- the second organic light-emitting layer 75 b is disposed on the second anode A 2 and may emit green light.
- the third organic light-emitting layer 75 c is disposed on the third anode A 3 and may emit blue light.
- FIG. 4 is an enlarged view of a region IV of FIG. 2 .
- a width d 1 of the opening OP at a top surface of the organic layer 70 is smaller than a width d 2 of the opening OP at a bottom surface of the organic layer 70 .
- a voltage is applied to the auxiliary electrode CB.
- the auxiliary electrode CB generates heat corresponding to the applied voltage, and the heat evaporates the organic layer 70 thereby the opening OP being formed on the auxiliary electrode CB.
- the heat is transferred through the organic layer 70 .
- the organic layer 70 has a temperature distribution where the temperature is decreased from the auxiliary electrode CB to a top surface of the organic layer 70 . Accordingly, the width d 1 of the opening OP at the top surface of the organic layer 70 is smaller than the width d 2 of the opening OP at the bottom surface of the organic layer 70 which is closer to the auxiliary electrode CB than the top surface of the organic layer 70 .
- the cathode C is disposed on the organic layer 70 .
- the cathode C is connected to the auxiliary electrode CB in the opening OP.
- the cathode C is formed on the display area DA of the organic light-emitting display device 100 without using a mask.
- the cathode C may be formed of an optically transparent or semi-transparent conductive material including, but is not limited to, indium tin oxide (ITO), indium zinc oxide (IZO), a compound of magnesium (Mg) and Ag, a compound of calcium (Ca) and Ag, or a compound of lithium (Li) and Al.
- the cathode C may be formed thin.
- the cathode C may have a thickness of 200 ⁇ or less.
- the cathode C may have relatively high resistance to an extent that the cathode C corresponding to each pixel (P 1 , P 2 , P 3 ) may have a different voltage. For example, when a voltage is applied to the cathode, the voltage suffers from a voltage drop due to the resistance of the cathode C. Accordingly, each pixel may have a different cathode voltage. Such voltage difference may cause luminance stains on the organic light emitting display device 100 .
- the auxiliary electrode CB has a lower resistance than the cathode C, and thus the combined resistance of the cathode C and the auxiliary electrode CB may reduce a voltage drop of the cathode C.
- the organic light-emitting display device 100 further includes a buffer layer 20 , a semiconductor layer SM, a gate insulating layer 30 , a gate electrode G, an interlayer insulating film 30 , a source electrode S, a drain electrode D, a planarization layer 50 , and the pixel defining layer 60 .
- the buffer layer 20 is formed on a top surface of the substrate 10 .
- the buffer layer 20 may prevent the penetration of impurity elements and planarize the top surface of the substrate 10 .
- the buffer layer 20 may be formed of various materials that may perform the above functions.
- the buffer layer 20 may include, but is not limited to, a silicon nitride (SiN x ) layer, a silicon oxide (SiO 2 ) layer, or a silicon oxynitride (SiO x N y ) layer.
- the buffer layer 20 may be omitted.
- the semiconductor layer SM is formed on the buffer layer 20 .
- the semiconductor layer SM may include an amorphous silicon layer or a polycrystalline silicon layer.
- the semiconductor layer SM may include a channel region, a source region and a drain region.
- the source region is disposed on one side of the channel region, and the drain region is disposed on the other side of the channel region.
- the source region may be electrically connected to the source electrode S, and the drain region may be electrically connected to the drain electrode D.
- the source and drain regions may be highly doped with P-type impurities such as B 2 H 6 .
- the kind of impurities used to dope the semiconductor layer SM may be different according to exemplary embodiments.
- the organic light emitting display device 100 may include an oxide semiconductor layer in place of the semiconductor layer SM.
- the gate insulating layer 30 is formed on the semiconductor layer SM.
- the gate insulating layer 30 may insulate the gate electrode G from the semiconductor layer SM.
- the gate insulating layer 30 may be formed of SiN x or SiO 2 .
- the gate electrode G is disposed on the gate insulating layer 30 .
- the gate electrode G overlaps at least a region of the semiconductor layer SM.
- a voltage applied to the gate electrode G may control the semiconductor layer SM to become conductive or non-conductive.
- a relatively high voltage applied to the gate electrode G may control the semiconductor layer SM to become conductive, thereby electrically connecting the drain electrode D and the source electrode S to each other.
- a relatively low voltage applied to the gate electrode G may control the semiconductor layer SM to become non-conductive, thereby insulating the drain electrode D and the source electrode S from each other.
- the interlayer insulating film 40 is formed on the gate electrode G.
- the interlayer insulating film 40 covers the gate electrode G to insulate the gate electrode G from the source electrode S and the drain electrode D.
- the interlayer insulating film 40 may be formed of SiN x or SiO 2 .
- the source electrode S and the drain electrode D are disposed on the interlayer insulating film 40 .
- the source electrode S and the drain electrode D penetrate the interlayer insulating film 40 and the gate insulating layer 30 to contact the source region S and the drain region D, respectively.
- the source electrode S, the drain electrode D, the gate electrode G, and the semiconductor layer SM may form the thin-film transistor T.
- the thin-film transistor T may determine whether to deliver a signal, which is transmitted to the source electrode S, to the drain electrode D according to a voltage applied to the gate electrode G.
- the planarization layer 50 is disposed on the thin-film transistor T and the interlayer insulating film 40 . To increase the light emission efficiency of the organic layer 70 disposed on the planarization layer 50 , a top surface of the planarization layer 50 is flat without a step.
- the planarization layer 50 may be formed of an insulating material including, but is not limited to, polyacrylates resin, epoxy resin, phenolic resin, polyamides resin, polyimides resin, unsaturated polyesters resin, poly phenylenethers resin, poly phenylenesulfides resin, or benzocyclobutene (BCB).
- a contact hole H is formed in the planarization layer 50 to expose a top surface of the drain electrode D of the thin-film transistor T which will be described later.
- the cathode C and the drain electrode D is electrically connected to each other through the contact hole H.
- the pixel defining layer 60 is disposed on the planarization layer 50 .
- the pixel defining layer 60 partially covers the anodes (A 1 , A 2 , A 3 ) to expose top surfaces of the anodes (A 1 , A 2 , A 3 ). Regions respectively including the pixel electrodes (i.e., the anodes (A 1 , A 2 , A 3 )) uncovered by the pixel defining layer 60 and the organic layer 70 and the cathode C disposed on the pixel electrodes (i.e., the anodes (A 1 , A 2 , A 3 )) may be defined as the pixels (P 1 , P 2 , P 3 ).
- the pixel defining layer 60 covers the auxiliary electrode CB.
- the opening OP penetrates the pixel defining layer 60 to expose the auxiliary electrode CB.
- the width d 2 of the opening OP at the top surface of the pixel defining layer 60 is smaller than a width d 3 of the opening OP at a bottom surface of the pixel defining layer 60 .
- the pixel defining layer 60 is also evaporated due to the heat generated from the auxiliary electrode CB.
- the organic layer 70 and the pixel defining layer 60 have a temperature distribution where the temperature is decreased from the auxiliary electrode CB to the top surface of the organic layer 70 .
- the width d 2 of the opening OP at the top surface of the pixel defining layer 60 is smaller than the width d 3 of the opening OP at the bottom surface of the pixel defining layer 60 which is closer to the auxiliary electrode CB than the top surface of the pixel defining layer 60 .
- the width d 1 of the opening OP at the top surface of the organic layer 70 is smaller than the width d 2 of the opening OP at the bottom surface of the organic layer 70 .
- the organic layer 70 may be evaporated due to the heat generated from the auxiliary electrode CB.
- the organic layer 70 and the pixel defining layer 60 have the temperature distribution where the temperature is decreased from the auxiliary electrode CB to the top surface of the organic layer 70 . Accordingly, the width d 1 of the opening OP at the top surface of the organic layer 70 is smaller than the width d 2 of the opening OP at the bottom surface of the organic layer 70 which is closer to the auxiliary electrode CB than the top surface of the organic layer 70 .
- FIG. 5 is a flowchart illustrating a method of manufacturing an organic light-emitting display device according to an exemplary embodiment of the present invention.
- the method of manufacturing the organic light-emitting display device 100 includes forming a plurality of anodes (A 1 , A 2 , A 3 ) and an auxiliary electrode CB (operation S 10 ), forming a pixel defining layer 60 (operation S 20 ), forming an organic layer 70 (operation S 30 ), forming an opening OP (operation S 40 ), and forming a cathode C (operation S 50 ).
- FIG. 6 is a cross-sectional view of the organic light-emitting display device 100 , illustrating the forming of the anodes (A 1 , A 2 , A 3 ) and the auxiliary electrode CB (operation S 10 ) according to an exemplary embodiment of the present invention.
- the anodes (A 1 , A 2 , A 3 ) and the auxiliary electrode CB are formed on a substrate 10 in operation S 10 .
- a buffer layer 20 , a gate insulating layer 30 , an interlayer insulating film 40 , a planarization layer 50 , a semiconductor layer SM, a gate electrode G, a source electrode S and a drain electrode D are formed on the substrate 10 , and the anodes (A 1 , A 2 , A 3 ) and the auxiliary electrode CB are formed on the planarization layer 50 .
- the anodes (A 1 , A 2 , A 3 ) are separated from each other.
- the drain electrode D is connected to its corresponding anode (A 1 , A 2 , A 3 ) through a contact hole H formed in the planarization layer 50 .
- the auxiliary electrode CB is separated from the anodes (A 1 , A 2 , A 3 ).
- the auxiliary electrode CB and the anodes (A 1 , A 2 , A 3 ) may be formed of substantially the same material.
- the auxiliary electrode CB and the anodes (A 1 , A 2 , A 3 ) may be simultaneously formed using a deposition process using the same mask.
- FIG. 7 is a cross-sectional view of the organic light-emitting display device 100 , illustrating the thrilling of the pixel defining layer 60 (operation S 20 ) according to an exemplary embodiment of the present invention.
- the pixel defining layer 60 is formed on the substrate 10 and the planarization layer 50 .
- the pixel defining layer 60 partially covers the anodes (A 1 , A 2 , A 3 ), but the present invention is not limited thereto.
- the pixel defining layer 60 partially exposes top surfaces of the anodes (A 1 , A 2 , A 3 ).
- the pixel defining layer 60 covers the auxiliary electrode CB.
- the pixel defining layer 60 need not be formed in a non-display area NDA.
- the pixel defining layer 60 need not be formed on end portions CBE of the auxiliary electrode CB which are disposed in the non-display area NDA.
- FIG. 8 is a flowchart illustrating the forming of the organic layer 70 (operation S 30 ) according to an exemplary embodiment of the present invention.
- the forming of the organic layer 70 (operation S 30 ) includes forming a hole injection layer 71 (operation S 31 ), forming a hole transport layer 72 (operation S 32 ), forming organic light-emitting layers ( 75 a, 75 b, 75 c ) (operation S 33 ), forming an electron transport layer 73 (operation 34 ), and forming an electron injection layer 74 (operation S 35 ).
- FIG. 9 is a cross-sectional view of the organic light-emitting display device 100 , illustrating the forming of the hole injection layer 71 (operation S 31 ) and the forming of the hole transport layer 72 (operation S 32 ) according to an exemplary embodiment of the present invention.
- the hole injection layer 71 is formed on the anodes (A 1 , A 2 , A 3 ), the pixel defining layer 60 , and the auxiliary electrode CB.
- the hole injection layer 71 may be formed on the display area DA without using a mask.
- the hole injection layer 71 need not be formed in the non-display area NDA.
- the hole injection layer 71 need not be formed on the end portions CBE of the auxiliary electrode CB which are disposed in the non-display area NDA.
- the hole transport layer 72 is formed on the hole injection layer 71 .
- the hole transport layer 72 is formed on the display area DA without using a mask.
- the hole transport layer 72 need not be formed in the non-display area NDA.
- the hole transport layer 72 need not be formed on the end portions CBE of the auxiliary electrode CB which are disposed in the non-display area NDA.
- FIG. 10 is a cross-sectional view of the organic light-emitting display device 100 , illustrating the forming of the organic light-emitting layers ( 75 a, 75 b, 75 c ) according to an exemplary embodiment of the present invention.
- first through third organic light-emitting layers 75 a through 75 c may be formed on first through third anodes A 1 through A 3 and the hole transport layer 72 , respectively.
- Each of the first through third organic light-emitting layers 75 a through 75 c may be formed using an inkjet printing method or a deposition method using a mask.
- FIG. 11 is a cross-sectional view of the organic light-emitting display device 100 , illustrating the forming of the electron transport layer 73 (operation S 34 ) and the forming of the electron injection layer 74 (operation S 35 ) according to an exemplary embodiment of the present invention.
- the electron transport layer 73 is formed on the hole transport layer 72 and the organic light-emitting layers ( 75 a, 75 b, 75 c ).
- the electron transport layer 73 is formed on the display area DA without using a mask.
- the electron transport layer 73 need not be formed in the non-display area NDA.
- the electron transport layer 73 need not be formed on the end portions CBE of the auxiliary electrode CB which are disposed in the non-display area NDA.
- the electron injection layer 74 is formed on the electron transport layer 73 .
- the electron injection layer 74 is formed on the display area DA without using a mask.
- the electron injection layer 74 need not be formed in the non-display area NDA.
- the electron injection layer 74 need not be formed on the end portions CBE of the auxiliary electrode CB which are disposed in the non-display area NDA.
- the operation of forming the omitted layer need not be performed.
- FIG. 12 is a cross-sectional view of the organic light-emitting display device 100 , illustrating the forming of the opening OP in the organic layer 70 (operation S 40 ) according to an exemplary embodiment of the present invention.
- a voltage may be applied to the auxiliary electrode CB, and heat generated from the auxiliary electrode CB by the voltage applied to the auxiliary electrode CB may cause a portion of the pixel defining layer 60 and a portion of the organic layer 70 which are adjacent to the auxiliary electrode CB to evaporate, thereby forming the opening OP.
- the voltage applied to the auxiliary electrode CB may be high enough to generate heat that evaporates the pixel defining layer 60 and the organic layer 70 .
- the voltage applied to the auxiliary electrode CB may be, for example, 15,000 V or higher.
- the voltage may be applied to the auxiliary electrode CB by applying different electric potentials to two end portions CBE of the auxiliary electrode CB.
- the two end portions CBE may be in the non-display areas NDA facing each other. If an electric potential is applied between the two end portions CBE disposed in the non-display areas NDA facing each other, an electric current may flow evenly through all regions of the auxiliary electrode CB. Accordingly, heat may be generated evenly from the auxiliary electrode CB, thereby forming a plurality of openings OP.
- Each opening OP has substantially the same size with other openings.
- An electric potential may also be applied between two pad portions (CBP 1 , CBP 2 ) (that is, two end portions CBE of another type) which are wide and thus may be contacted using a tool for applying electric potentials.
- the opening OP where the cathode C is connected to the auxiliary electrode CB may be formed by applying a voltage to the auxiliary electrode CB. Therefore, the opening OP may be formed through the hole injection layer 71 , the hole transport layer 72 , the electron transport layer 73 , and the electron injection layer 74 without using an etching process. Accordingly, the method of manufacturing the organic light-emitting display device 100 according to an exemplary embodiment does not require the use of a mask in forming the hole injection layer 71 , the hole transport layer 72 , the electron transport layer 73 or the electron injection layer 74 nor in forming the opening OP using an etching process. This may simplify the process of manufacturing an organic light-emitting display device according to an exemplary embodiment.
- the cathode C is formed on the organic layer 70 .
- the cathode C is electrically connected to the auxiliary electrode CB in the opening OP.
- the cathode C may be formed on the display area DA without using a mask.
- the forming of the cathode C (operation S 50 ) may produce the organic light-emitting display device 100 of FIG. 2 .
- FIG. 13 is a plan view illustrating the arrangement of a plurality of anodes (A 1 , A 2 , A 3 ) and an auxiliary electrode CB according to an exemplary embodiment of the present invention.
- the auxiliary electrode CB may be formed of stripe patterns.
- the auxiliary electrode CB may include a plurality of straight lines which are separated from each other. End portions CBE of the auxiliary electrode CB may be, but are not limited to, pad portions (CBP 1 , CBP 2 ). If the auxiliary electrode CB is formed as a plurality of stripe patterns, a voltage may be applied to each of the stripe patterns to form an opening OP in the forming of the opening OP (operation S 40 ).
- FIG. 14 is a cross-sectional view of an organic light-emitting display device 101 according to an exemplary embodiment of the present invention.
- FIG. 15 is an enlarged view of a region XV of FIG. 14 .
- a plan view of the organic light-emitting display device 101 according to an exemplary embodiment is substantially the same as that of FIG. 1
- FIG. 14 is a cross-sectional view taken along substantially the same line as the line of FIG. 1 .
- the organic light-emitting display device 101 includes a white organic light-emitting layer 76 as an organic layer.
- the white organic light-emitting layer 76 emits white light at a luminance level corresponding to an electric current flowing therethrough.
- the white organic light-emitting layer 76 may contain materials that emit red light, blue light and green light, respectively.
- An opening OP is formed in the white organic light-emitting layer 76 and a pixel defining layer 60 , and an auxiliary electrode CB is exposed through the opening OP. The opening OP will now be described in more detail with reference to FIG. 15 .
- a width d 4 of the opening OP at a top surface of the white organic light-emitting layer 76 is smaller than a width d 5 of the opening OP at a bottom surface of the white organic light-emitting layer 76 .
- the width d 4 of the opening OP at the top surface of the white organic light-emitting layer 76 is smaller than the width d 5 of the opening OP at the bottom surface of the white organic light-emitting layer 76 which is closer to the auxiliary electrode CB than the top surface of the white organic light-emitting layer 76 .
- the organic light-emitting display device 101 further includes a color filter layer 80 .
- the color filter layer 80 is disposed on a cathode C.
- the color filter layer 80 includes a first color filter 81 , a second color filter 82 and a third color filter 83 of different colors.
- the first color filter 81 is disposed on a first pixel electrode (i.e., a first anode A 1 )
- the second color filter 82 is disposed on a second pixel electrode (i.e., a second anode A 2 )
- the third color filter 83 is disposed on a third pixel electrode (i.e., a third anode A 3 ).
- the first color filter 81 may be, but is not limited to, a red color filter
- the second color filter 82 may be, but is not limited to, a green color filter
- the third color filter 83 may be, but is not limited to, a blue color filter.
- FIG. 16 is a cross-sectional view of an organic light-emitting display device 102 according to an exemplary embodiment of the present invention.
- FIG. 17 is an enlarged view of a region XVII of FIG. 16 .
- FIG. 18 is a flowchart illustrating the forming of an organic layer according to an exemplary embodiment of the present invention.
- a plan view of the organic light-emitting display device 102 according to an exemplary embodiment is substantially the same as that of FIG. 1
- FIG. 16 is a cross-sectional view taken along substantially the same line as the line II-II′ of FIG. 1 .
- the organic light-emitting display device 102 includes a first organic light-emitting layer 77 a, a second organic light-emitting layer 77 b, and a third organic light-emitting layer 77 c as an organic layer.
- the first through third organic light-emitting layers 77 a through 77 c may emit light of different colors.
- the first organic light-emitting layer 77 a may emit red light
- the second organic light-emitting layer 77 b may emit green light
- the third organic light-emitting layer 77 c may emit blue light.
- the present invention is not limited thereto.
- the first organic light-emitting layer 77 a is disposed on a first anode A 1
- the second organic light-emitting layer 77 b is disposed on a second anode A 2
- the third organic light-emitting layer 77 c is disposed on the first through third anodes A 1 through A 3 .
- the first organic light-emitting layer 77 a and the third organic light-emitting layer 77 c are disposed on the first anode A 1
- the second organic light-emitting layer 77 b and the third organic light-emitting layer 77 c are disposed on the second anode A 2 .
- An opening OP is formed in the third organic light-emitting layer 77 c and a pixel defining layer 60 .
- An auxiliary electrode CB is exposed through the opening OP, and the auxiliary electrode CB is electrically connected to a cathode C.
- the opening OP will now be described in more detail with reference to FIG. 17 . Referring to FIG. 17 , a width d 6 of the opening OP at a top surface of the third organic light-emitting layer 77 c is smaller than a width d 7 of the opening OP at a bottom surface of the third organic light-emitting layer 77 c.
- the third organic light-emitting layer 77 c is evaporated by heat generated from the auxiliary electrode CB.
- the organic layers 77 a to 77 c have a temperature distribution where the temperature is decreased from the auxiliary electrode CB to a top surface of the third organic light-emitting layer 77 c.
- the width d 6 of the opening OP at the top surface of the third organic light-emitting layer 77 c is smaller than the width d 7 of the opening OP at the bottom surface of the third organic light-emitting layer 77 c which is closer to the auxiliary electrode CB than the top surface of the third organic light-emitting layer 77 c.
- the forming of the organic layer includes forming the first organic light-emitting layer 77 a and the second organic light-emitting layer 77 b (operation S 36 ) and forming the third organic light-emitting layer 77 c (operation S 37 ).
- the first organic light-emitting layer 77 a is formed on the first anode A 1
- the second organic light-emitting layer 77 b is formed on the second anode A 2 using an inkjet printing method or a deposition method using a mask.
- the third organic light-emitting layer 77 c is formed on a display area DA without using a mask.
- the first and second organic light-emitting layers 77 a and 77 b may be formed on the third organic light-emitting layer 77 c.
- the forming of the third organic light-emitting layer 77 c (operation S 37 ) may be performed before the forming of the first organic light-emitting layer 77 a and the second organic light-emitting layer 77 b (operation S 36 ).
- the process of manufacturing an organic light-emitting display device may be simplified without using a mask for forming organic layer and/or an opening in the organic layer.
- an auxiliary electrode may reduce a voltage drop due to internal resistance of a cathode.
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
- This application claims priority under 35 U.S.C. §119 to Korean Patent Application No. 10-2013-0078420, filed on Jul. 4, 2013 in the Korean Intellectual Property Office, the disclosure of which is incorporated by reference herein in its entirety.
- The present invention relates to an organic light-emitting display device and a method of manufacturing the same.
- Organic light-emitting display devices include a plurality of pixels. Each pixel includes a first electrode, a second electrode, and an organic layer disposed between the first electrode and the second electrode. The organic layer may emit light having a luminance level corresponding to an electric current flowing between the first electrode and the second electrode. The organic light-emitting display devices display a desired image by controlling the electric current flowing between the first electrode and the second electrode.
- According to an exemplary embodiment of the present invention, an organic light-emitting display device includes a plurality of anodes and an auxiliary electrode disposed on the substrate. The auxiliary electrode is separated from the plurality of the anodes. The organic light-emitting display device further includes an organic layer disposed on the plurality of the anodes, an opening penetrating the organic layer to expose the auxiliary electrode, and a cathode disposed on the organic layer and the exposed auxiliary electrode. The cathode is electrically connected to the auxiliary electrode. The opening has a first width at a proximal end and a second width at a distal end. The distal end is closer to the auxiliary electrode than the proximal end. The first width is smaller than the second width.
- According to an exemplary embodiment of the present invention, an organic light-emitting display device includes a substrate including a display area and a non-display area. The organic light-emitting display device further includes a plurality of anodes on the display area of the substrate. The organic light-emitting display device further includes an auxiliary electrode disposed on both the display area and the non-display area of the substrate. The auxiliary electrode is separated from the plurality of the anodes. An organic layer is disposed on the plurality of the anodes. An opening penetrates the organic layer to expose the auxiliary electrode. The organic light-emitting display further includes a cathode disposed on the organic layer and the exposed auxiliary electrode. The auxiliary electrode includes end portions disposed in the non-display area.
- According to an exemplary embodiment of the present invention, a method of manufacturing an organic light-emitting display device is provided. A plurality of anodes and an auxiliary electrode are formed on a substrate. The auxiliary electrode is separated from the plurality of the anodes. An organic layer is formed on the plurality of the anodes and the auxiliary electrode. An opening is formed in the organic layer by applying a voltage to the auxiliary electrode. The opening exposes the auxiliary electrode. A cathode is formed on the organic layer and the exposed auxiliary electrode. The cathode is electrically connected to the exposed auxiliary electrode.
- These and other features of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the accompanying drawings of which:
-
FIG. 1 is a plan view of an organic light-emitting display device according to an exemplary embodiment of the present invention; -
FIG. 2 is a cross-sectional view of the organic light-emitting display device taken along the line II-II′ of FIG. I; -
FIG. 3 is a plan view illustrating the arrangement of a plurality of anodes and an auxiliary electrode according to an exemplary embodiment of the present invention; -
FIG. 4 is an enlarged view of a region IV ofFIG. 2 ; -
FIG. 5 is a flowchart illustrating a method of manufacturing an organic light-emitting display device according to an exemplary embodiment of the present invention; -
FIG. 6 is a cross-sectional view of the organic light-emitting display device, illustrating an operation of forming a plurality of anodes and an auxiliary electrode according to an exemplary embodiment of the present invention; -
FIG. 7 is a cross-sectional view of the organic light-emitting display device, illustrating an operation of forming a pixel defining layer according to an exemplary embodiment of the present invention; -
FIG. 8 is a flowchart illustrating an operation of forming an organic layer according to an exemplary embodiment of the present invention; -
FIG. 9 is a cross-sectional view of the organic light-emitting display device, illustrating an operation of forming a hole injection layer and an operation of forming a hole transport layer according to an exemplary embodiment of the present invention; -
FIG. 10 is a cross-sectional view of the organic light-emitting display device, illustrating an operation of forming organic light-emitting layers according to an exemplary embodiment of the present invention; -
FIG. 11 is a cross-sectional view of the organic light-emitting display device, illustrating an operation of forming an electron transport layer and an operation of forming an electron injection layer according to an exemplary embodiment of the present invention; -
FIG. 12 is a cross-sectional view of the organic light-emitting display device, illustrating an operation of forming an opening in the organic layer according to an exemplary embodiment of the present invention; -
FIG. 13 is a plan view illustrating an arrangement of a plurality of anodes and an auxiliary electrode according to an exemplary embodiment of the present invention; -
FIG. 14 is a cross-sectional view of an organic light-emitting display device according to an exemplary embodiment of the present invention; -
FIG. 15 is an enlarged view of a region XV ofFIG. 14 ; -
FIG. 16 is a cross-sectional view of an organic light-emitting display device according to an exemplary embodiment of the present invention; -
FIG. 17 is an enlarged view of a region XVII ofFIG. 16 ; and -
FIG. 18 is a flowchart illustrating a method of manufacturing an organic light-emitting display device according to an exemplary embodiment of the present invention. - Exemplary embodiments of the inventive concept will be described below in detail with reference to the accompanying drawings. However, the inventive concept may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, the thickness of layers and regions may be exaggerated for clarity. It will also be understood that when an element is referred to as being “on” another element or substrate, it may be directly on the other element or substrate, or intervening layers may also be present. It will also be understood that when an element is referred to as being “coupled to” or “connected to” another element, it may be directly coupled to or connected to the other element, or intervening elements may also be present. Like reference numerals may refer to the like elements throughout the specification and drawings.
-
FIG. 1 is a plan view of an organic light-emittingdisplay device 100 according to an exemplary embodiment of the present invention, - Referring to
FIG. 1 , the organic light-emittingdisplay device 100 includes a plurality of pixels (P1, P2, P3). Each of the pixels (P1, P2, P3) emits light, and the organic light-emittingdisplay device 100 displays an image by controlling the luminance of light emitted from each of the pixels (P1, P2, P3). The pixels (P1, P2, P3) are arranged in a matrix pattern, but the arrangement pattern of the pixels (P1, P2, P3) is not limited to the matrix pattern. - The pixels (P1, P2, P3) include first pixels P1, second pixels P2, and third pixels P3. The first through third pixels P1 through P3 may emit light of different colors. In an example, the first pixels P1 may emit red light, the second pixels P2 may emit green light, and the third pixels P3 may emit blue light. However, the present invention is not limited thereto. One first pixel P1, one second pixel P2, and one third pixel P3 which are adjacent to each other may collectively function as a unit for displaying an image on the organic light-emitting
display device 100. - The organic light-emitting
display device 100 will now be described in more detail with reference toFIG. 2 ,FIG. 2 is a cross-sectional view of the organic light-emittingdisplay device 100 taken along the line II-II′ ofFIG. 1 . - Referring to
FIG. 2 , the organic light-emittingdisplay device 100 includes asubstrate 10, a plurality of anodes (A1, A2, A3), an auxiliary electrode CB, anorganic layer 70, and a cathode C. - The
substrate 10 is plate-shaped and supports other structures formed thereon. Thesubstrate 10 may be formed of an insulating material such as, but is not limited to, glass, polyethylene terephthalate (PET), polycarbonate (PC), polyethersulfone (PES), polyimide (PI) or polymethylmethacrylate (PMMA). Thesubstrate 10 may include a flexible material. - The anodes (A1, A2, A3) are formed on the
substrate 10. Each of the anodes (A1, A2, A3) is connected to a thin-film transistor T which will be described later, and an electric current flowing through theorganic layer 70 is controlled by a signal transmitted from the thin-film transistor T. The anodes (A1, A2, A3) may be reflective. For example, the anodes (A1, A2, A3) may be formed of materials including, but are not limited to, silver (Ag)/indium tin oxide (ITO), ITO/Ag/ITO, molybdenum (Mo)/ITO, aluminum (Al)/ITO, or titanium (Ti)/ITO. The anodes (A1, A2, A3) reflect light generated from theorganic layer 70 in an upward direction. - The anodes (A1, A2, A3) include a first anode A1, a second anode A2, and a third anode A3. The first anode A1 is disposed in each of the first pixels P1, the second anode A2 is disposed in each of the second pixels P2, and the third anode A3 is disposed in each of the third pixels P3.
- The auxiliary electrode CB is disposed on the
substrate 10 and is separated from the anodes (A1, A2, A3). The auxiliary electrode CB is formed of substantially the same material as the anodes (A1, A2, A3). For example, the auxiliary electrode CB and the anodes (A1, A2, A3) may be simultaneously formed of substantially the same material by in the same process. However, the present invention is not limited thereto. The auxiliary electrode CB may be electrically connected to the cathode C. - The auxiliary electrode CB may be formed of a material with lower resistivity than the cathode C. The auxiliary electrode CB is electrically connected to the cathode C thereby reducing a voltage drop of a voltage applied to the cathode C due to the internal resistance of the cathode C.
- The anodes (A1, A2, A3) and the auxiliary electrode CB will now be described in more detail with reference to
FIG. 3 .FIG. 3 is a plan view of the organic light-emittingdisplay device 100, illustrating an arrangement of the anodes (A1, A2, A3) and the auxiliary electrode CB according to an exemplary embodiment of the present invention. - Referring to
FIG. 3 , the arrangement of the anodes (A1, A2, A3) is substantially the same as the arrangement of the pixels (P1, P2, P3). The first anode A1 is disposed in the first pixel P1. The second anode A2 is disposed in the second pixel P2. The third anode A3 is disposed in the third pixel P3. - The auxiliary electrode CB is arranged in a meshed structure. One first anode A1, one second anode A2 and one third anode A3 are disposed inside a space surrounded by the auxiliary electrode CB. The auxiliary electrode CB is disposed between two neighboring anodes (A1, A2, A3). However, the present invention is not limited thereto, and the shape of the auxiliary electrode CB may vary.
- The auxiliary electrode CB includes a plurality of end portions CBE. The end portions CBE are disposed in a non-display area NDA. The end portions CBE are regions of the auxiliary electrode CB which extend to the non-display area NDA. The organic light-emitting
display device 100 includes a display area DA which displays an image and the non-display area NDA which surrounds the display area DA. The pixels (P1, P2, P3) and a plurality of pixel electrodes (i.e., the anodes (A1, A2, A3)) are arranged in the display area DA, and the non-display area NDA may surround the outside of the display area DA. - To form the opening OP in the
organic layer 70, a voltage may be applied between two end portions CBE disposed adjacent to both sides of the display area DA. To apply a voltage to the end portions CBE, apixel defining layer 60 which will be described later need not be formed on the end portions CBE. - The end portions CBE may be pad portions (CBP1, CBP2) formed by increasing a width of the auxiliary electrode CB. All of the end portions CBE may be the pad portions (CBP1, CBP2). However, the present invention is not limited thereto, and only some of the end portions CBE may be the pad portions (CBP1, CBP2). Since the pad portions (CBP1, CBP2) are formed by increasing the width of the auxiliary electrode CB, a voltage may be applied to the auxiliary electrode CB by applying the voltage to the pad portions (CBP1, CBP2). The pad portions (CBP1, CBP2) include a first pad portion CBP1 and a second pad portion CBP2 which are formed at different end portions CBE. The display area DA is disposed between the first pad portion CBP1 and the second pad portion CBP2. An electric potential is applied between the first pad portion CBP1 and the second pad portion CBP2, and thus an electric current flows evenly through all regions of the auxiliary electrode CB. Accordingly, heat may be generated evenly from the auxiliary electrode CB, thereby forming a plurality of openings OP. Each opening OP may have substantially the same size as other openings.
- Referring to FIG, 2, the
organic layer 70 is interposed between the anodes (A1, A2, A3) and the cathode C. Theorganic layer 70 emits light having a luminance level corresponding to an electric current flowing between the anodes (A1, A2, A3) and the cathode C. - The auxiliary electrode CB is disposed in the opening OP where the
organic layer 70 does not exist on thesubstrate 10. The auxiliary electrode CB and the cathode C is electrically connected to each other. The opening OP will be described in more detail later with reference toFIG. 4 . - The
organic layer 70 includes ahole injection layer 71, ahole transport layer 72, anelectron transport layer 73, anelectron injection layer 74, and organic light-emitting layers (75 a, 75 b, 75 c). - When an electric field is applied between the anodes (A1, A2, A3) and the cathode C, electrons are supplied from the cathode C to the organic light-emitting layers (75 a, 75 b, 75 c) and holes are supplied from the anodes (A1, A2, A3) to the organic light-emitting layers (75 a, 75 b, 7 c 5).
- For example, the holes supplied from the anodes (A1, A2, A3) are injected into the
hole injection layer 71 disposed on the anodes (A1, A2, A3). The injected holes are transported to the organic light-emitting layers (75 a, 75 b, 75 c) through thehole transport layer 72. Thehole transport layer 72 is disposed on thehole injection layer 71. - The electrons supplied from the cathode C are injected into the
electron injection layer 74. The injected electrons are transported to the organic light-emitting layers (75 a, 75 b, 75 c) through theelectron transport layer 73. Theelectron injection layer 74 is disposed on theelectron transport layer 73. The organic light-emitting layers (75 a, 75 b, 75 c) are interposed between theelectron transport layer 73 and thehole transport layer 72. Thehole injection layer 71, thehole transport layer 72, theelectron transport layer 73 and theelectron injection layer 74 may be formed on the display area DA of the organic light-emittingdisplay device 100.Such layers 71 to 74 need not be subject to a patterning process using a mask. Alternatively,such layers 71 to 74 may be patterned using a mask. - The
organic layer 70 is not limited to have such fourlayers 71 to 74. For example, at least one layer of thehole injection layer 71, thehole transport layer 72, theelectron transport layer 73 and theelectron injection layer 74 may be omitted from theorganic layer 70. Theorganic layer 70 may include only one layer among thehole injection layer 71, thehole transport layer 72, theelectron transport layer 73, and theelectron injection layer 74. - The organic light-emitting layers (75 a, 75 b, 75 c) are disposed between the
hole transport layer 72 and theelectron transport layer 73. Each of the organic light-emitting layers (75 a, 75 b, 75 c) emits light having a luminance level corresponding to the magnitude of an electric current flowing therethrough in response to an electric field applied between the anodes (A1, A2, A3) and the cathode C. The organic light-emitting layers (75 a, 75 b, 75 c) may emit light corresponding to the energy generated by a change in an energy level of excitons formed by the combination of holes and electrons. The organic light-emitting layers (75 a, 75 b, 75 c) are formed on the anodes (A1, A2, A3) by a deposition or printing method using a mask. The organic light-emitting layers (75 a, 75 b, 75 c) are not be exposed through the opening OP. Therefore, the organic light-emitting layers (75 a, 75 b, 75 c) need not contact the cathode C through the opening OP. The organic light-emitting layers (75 a, 75 b, 75 c) include a first organic light-emittinglayer 75 a, a second organic light-emittinglayer 75 b, and a third organic light-emittinglayer 75 c. The first organic light-emittinglayer 75 a is disposed on the first anode A1 and may emit red light. The second organic light-emittinglayer 75 b is disposed on the second anode A2 and may emit green light. The third organic light-emittinglayer 75 c is disposed on the third anode A3 and may emit blue light. - The opening OP will now be described in more detail with reference to
FIG. 4 .FIG. 4 is an enlarged view of a region IV ofFIG. 2 . Referring toFIG. 4 , a width d1 of the opening OP at a top surface of theorganic layer 70 is smaller than a width d2 of the opening OP at a bottom surface of theorganic layer 70. To form the opening OP, a voltage is applied to the auxiliary electrode CB. The auxiliary electrode CB generates heat corresponding to the applied voltage, and the heat evaporates theorganic layer 70 thereby the opening OP being formed on the auxiliary electrode CB. The heat is transferred through theorganic layer 70. Theorganic layer 70 has a temperature distribution where the temperature is decreased from the auxiliary electrode CB to a top surface of theorganic layer 70. Accordingly, the width d1 of the opening OP at the top surface of theorganic layer 70 is smaller than the width d2 of the opening OP at the bottom surface of theorganic layer 70 which is closer to the auxiliary electrode CB than the top surface of theorganic layer 70. - Referring to
FIG. 2 , the cathode C is disposed on theorganic layer 70. The cathode C is connected to the auxiliary electrode CB in the opening OP. The cathode C is formed on the display area DA of the organic light-emittingdisplay device 100 without using a mask. The cathode C may be formed of an optically transparent or semi-transparent conductive material including, but is not limited to, indium tin oxide (ITO), indium zinc oxide (IZO), a compound of magnesium (Mg) and Ag, a compound of calcium (Ca) and Ag, or a compound of lithium (Li) and Al. Light generated from theorganic layer 70 is emitted to the outside of the organic light-emittingdisplay device 100 through the cathode C. To increase light transmittance of the cathode C, the cathode C may be formed thin. For example, the cathode C may have a thickness of 200 Å or less. - The cathode C may have relatively high resistance to an extent that the cathode C corresponding to each pixel (P1, P2, P3) may have a different voltage. For example, when a voltage is applied to the cathode, the voltage suffers from a voltage drop due to the resistance of the cathode C. Accordingly, each pixel may have a different cathode voltage. Such voltage difference may cause luminance stains on the organic light emitting
display device 100. The auxiliary electrode CB has a lower resistance than the cathode C, and thus the combined resistance of the cathode C and the auxiliary electrode CB may reduce a voltage drop of the cathode C. - The organic light-emitting
display device 100 further includes abuffer layer 20, a semiconductor layer SM, agate insulating layer 30, a gate electrode G, aninterlayer insulating film 30, a source electrode S, a drain electrode D, aplanarization layer 50, and thepixel defining layer 60. - The
buffer layer 20 is formed on a top surface of thesubstrate 10. Thebuffer layer 20 may prevent the penetration of impurity elements and planarize the top surface of thesubstrate 10. Thebuffer layer 20 may be formed of various materials that may perform the above functions. For example, thebuffer layer 20 may include, but is not limited to, a silicon nitride (SiNx) layer, a silicon oxide (SiO2) layer, or a silicon oxynitride (SiOxNy) layer. Alternatively, thebuffer layer 20 may be omitted. - The semiconductor layer SM is formed on the
buffer layer 20. The semiconductor layer SM may include an amorphous silicon layer or a polycrystalline silicon layer. The semiconductor layer SM may include a channel region, a source region and a drain region. The source region is disposed on one side of the channel region, and the drain region is disposed on the other side of the channel region. The source region may be electrically connected to the source electrode S, and the drain region may be electrically connected to the drain electrode D. The source and drain regions may be highly doped with P-type impurities such as B2H6. The kind of impurities used to dope the semiconductor layer SM may be different according to exemplary embodiments. - Alternatively, the organic light emitting
display device 100 may include an oxide semiconductor layer in place of the semiconductor layer SM. Thegate insulating layer 30 is formed on the semiconductor layer SM. Thegate insulating layer 30 may insulate the gate electrode G from the semiconductor layer SM. Thegate insulating layer 30 may be formed of SiNx or SiO2. - The gate electrode G is disposed on the
gate insulating layer 30. The gate electrode G overlaps at least a region of the semiconductor layer SM. A voltage applied to the gate electrode G may control the semiconductor layer SM to become conductive or non-conductive. For example, a relatively high voltage applied to the gate electrode G may control the semiconductor layer SM to become conductive, thereby electrically connecting the drain electrode D and the source electrode S to each other. A relatively low voltage applied to the gate electrode G may control the semiconductor layer SM to become non-conductive, thereby insulating the drain electrode D and the source electrode S from each other. - The
interlayer insulating film 40 is formed on the gate electrode G. Theinterlayer insulating film 40 covers the gate electrode G to insulate the gate electrode G from the source electrode S and the drain electrode D. Theinterlayer insulating film 40 may be formed of SiNx or SiO2. - The source electrode S and the drain electrode D are disposed on the
interlayer insulating film 40. The source electrode S and the drain electrode D penetrate theinterlayer insulating film 40 and thegate insulating layer 30 to contact the source region S and the drain region D, respectively. The source electrode S, the drain electrode D, the gate electrode G, and the semiconductor layer SM may form the thin-film transistor T. The thin-film transistor T may determine whether to deliver a signal, which is transmitted to the source electrode S, to the drain electrode D according to a voltage applied to the gate electrode G. - The
planarization layer 50 is disposed on the thin-film transistor T and theinterlayer insulating film 40. To increase the light emission efficiency of theorganic layer 70 disposed on theplanarization layer 50, a top surface of theplanarization layer 50 is flat without a step. Theplanarization layer 50 may be formed of an insulating material including, but is not limited to, polyacrylates resin, epoxy resin, phenolic resin, polyamides resin, polyimides resin, unsaturated polyesters resin, poly phenylenethers resin, poly phenylenesulfides resin, or benzocyclobutene (BCB). A contact hole H is formed in theplanarization layer 50 to expose a top surface of the drain electrode D of the thin-film transistor T which will be described later. The cathode C and the drain electrode D is electrically connected to each other through the contact hole H. - The
pixel defining layer 60 is disposed on theplanarization layer 50. Thepixel defining layer 60 partially covers the anodes (A1, A2, A3) to expose top surfaces of the anodes (A1, A2, A3). Regions respectively including the pixel electrodes (i.e., the anodes (A1, A2, A3)) uncovered by thepixel defining layer 60 and theorganic layer 70 and the cathode C disposed on the pixel electrodes (i.e., the anodes (A1, A2, A3)) may be defined as the pixels (P1, P2, P3). Thepixel defining layer 60 covers the auxiliary electrode CB. The opening OP penetrates thepixel defining layer 60 to expose the auxiliary electrode CB. - Referring to
FIG. 4 , the width d2 of the opening OP at the top surface of thepixel defining layer 60 is smaller than a width d3 of the opening OP at a bottom surface of thepixel defining layer 60. When the voltage is applied to the auxiliary electrode CB, thepixel defining layer 60 is also evaporated due to the heat generated from the auxiliary electrode CB. Theorganic layer 70 and thepixel defining layer 60 have a temperature distribution where the temperature is decreased from the auxiliary electrode CB to the top surface of theorganic layer 70. Accordingly, the width d2 of the opening OP at the top surface of thepixel defining layer 60 is smaller than the width d3 of the opening OP at the bottom surface of thepixel defining layer 60 which is closer to the auxiliary electrode CB than the top surface of thepixel defining layer 60. - The width d1 of the opening OP at the top surface of the
organic layer 70 is smaller than the width d2 of the opening OP at the bottom surface of theorganic layer 70. When the voltage is applied to the auxiliary electrode CB, theorganic layer 70 may be evaporated due to the heat generated from the auxiliary electrode CB. Theorganic layer 70 and thepixel defining layer 60 have the temperature distribution where the temperature is decreased from the auxiliary electrode CB to the top surface of theorganic layer 70. Accordingly, the width d1 of the opening OP at the top surface of theorganic layer 70 is smaller than the width d2 of the opening OP at the bottom surface of theorganic layer 70 which is closer to the auxiliary electrode CB than the top surface of theorganic layer 70. - A method of manufacturing the organic light-emitting
display device 100 will now be described with reference toFIG. 5 .FIG. 5 is a flowchart illustrating a method of manufacturing an organic light-emitting display device according to an exemplary embodiment of the present invention. - Referring to
FIG. 5 , the method of manufacturing the organic light-emittingdisplay device 100 includes forming a plurality of anodes (A1, A2, A3) and an auxiliary electrode CB (operation S10), forming a pixel defining layer 60 (operation S20), forming an organic layer 70 (operation S30), forming an opening OP (operation S40), and forming a cathode C (operation S50). - The forming of the anodes (A1, A2, A3) and the auxiliary electrode CB (operation S10) will now be described with reference to
FIG. 6 . FIG, 6 is a cross-sectional view of the organic light-emittingdisplay device 100, illustrating the forming of the anodes (A1, A2, A3) and the auxiliary electrode CB (operation S10) according to an exemplary embodiment of the present invention. Referring toFIG. 6 , the anodes (A1, A2, A3) and the auxiliary electrode CB are formed on asubstrate 10 in operation S10. Abuffer layer 20, agate insulating layer 30, aninterlayer insulating film 40, aplanarization layer 50, a semiconductor layer SM, a gate electrode G, a source electrode S and a drain electrode D are formed on thesubstrate 10, and the anodes (A1, A2, A3) and the auxiliary electrode CB are formed on theplanarization layer 50. The anodes (A1, A2, A3) are separated from each other. The drain electrode D is connected to its corresponding anode (A1, A2, A3) through a contact hole H formed in theplanarization layer 50. The auxiliary electrode CB is separated from the anodes (A1, A2, A3). The auxiliary electrode CB and the anodes (A1, A2, A3) may be formed of substantially the same material. The auxiliary electrode CB and the anodes (A1, A2, A3) may be simultaneously formed using a deposition process using the same mask. - The forming of the pixel defining layer 60 (operation S20) will now be described with reference to PIG. 7.
FIG. 7 is a cross-sectional view of the organic light-emittingdisplay device 100, illustrating the thrilling of the pixel defining layer 60 (operation S20) according to an exemplary embodiment of the present invention. Thepixel defining layer 60 is formed on thesubstrate 10 and theplanarization layer 50. Thepixel defining layer 60 partially covers the anodes (A1, A2, A3), but the present invention is not limited thereto. Thepixel defining layer 60 partially exposes top surfaces of the anodes (A1, A2, A3). Thepixel defining layer 60 covers the auxiliary electrode CB. Thepixel defining layer 60 need not be formed in a non-display area NDA. Thepixel defining layer 60 need not be formed on end portions CBE of the auxiliary electrode CB which are disposed in the non-display area NDA. - The forming of the organic layer 70 (operation S30) will now be described with reference to
FIGS. 8 through 11 . -
FIG. 8 is a flowchart illustrating the forming of the organic layer 70 (operation S30) according to an exemplary embodiment of the present invention. Referring toFIG. 8 , the forming of the organic layer 70 (operation S30) includes forming a hole injection layer 71 (operation S31), forming a hole transport layer 72 (operation S32), forming organic light-emitting layers (75 a, 75 b, 75 c) (operation S33), forming an electron transport layer 73 (operation 34), and forming an electron injection layer 74 (operation S35). - The forming of the hole injection layer 71 (operation S31) and the forming of the hole transport layer 72 (operation S32) will now be described with reference to
FIG. 9 .FIG. 9 is a cross-sectional view of the organic light-emittingdisplay device 100, illustrating the forming of the hole injection layer 71 (operation S31) and the forming of the hole transport layer 72 (operation S32) according to an exemplary embodiment of the present invention. Referring toFIG. 9 , in the forming of the hole injection layer 71 (operation S31), thehole injection layer 71 is formed on the anodes (A1, A2, A3), thepixel defining layer 60, and the auxiliary electrode CB. Thehole injection layer 71 may be formed on the display area DA without using a mask. Thehole injection layer 71 need not be formed in the non-display area NDA. Thehole injection layer 71 need not be formed on the end portions CBE of the auxiliary electrode CB which are disposed in the non-display area NDA. - In the forming of the hole transport layer 72 (operation S32), the
hole transport layer 72 is formed on thehole injection layer 71. Thehole transport layer 72 is formed on the display area DA without using a mask. Thehole transport layer 72 need not be formed in the non-display area NDA. Thehole transport layer 72 need not be formed on the end portions CBE of the auxiliary electrode CB which are disposed in the non-display area NDA. - The forming of the organic light-emitting layers (75 a, 75 b, 75 c) (operation S33) will now be described with reference to
FIG. 10 .FIG. 10 is a cross-sectional view of the organic light-emittingdisplay device 100, illustrating the forming of the organic light-emitting layers (75 a, 75 b, 75 c) according to an exemplary embodiment of the present invention. Referring toFIG. 10 , in the forming of the organic light-emitting layers (75 a, 75 b, 75 c) (operation S33), first through third organic light-emittinglayers 75 a through 75 c may be formed on first through third anodes A1 through A3 and thehole transport layer 72, respectively. Each of the first through third organic light-emittinglayers 75 a through 75 c may be formed using an inkjet printing method or a deposition method using a mask. - The forming of the electron transport layer 73 (operation S34) and the forming of the electron injection layer 74 (operation S35) will now be described with reference to 11.
FIG. 11 is a cross-sectional view of the organic light-emittingdisplay device 100, illustrating the forming of the electron transport layer 73 (operation S34) and the forming of the electron injection layer 74 (operation S35) according to an exemplary embodiment of the present invention. Referring toFIG. 11 , in the forming of the electron transport layer 73 (operation S34), theelectron transport layer 73 is formed on thehole transport layer 72 and the organic light-emitting layers (75 a, 75 b, 75 c). Theelectron transport layer 73 is formed on the display area DA without using a mask. Theelectron transport layer 73 need not be formed in the non-display area NDA. Theelectron transport layer 73 need not be formed on the end portions CBE of the auxiliary electrode CB which are disposed in the non-display area NDA. - In the forming of the electron injection layer 74 (operation S35), the
electron injection layer 74 is formed on theelectron transport layer 73. Theelectron injection layer 74 is formed on the display area DA without using a mask. Theelectron injection layer 74 need not be formed in the non-display area NDA. Theelectron injection layer 74 need not be formed on the end portions CBE of the auxiliary electrode CB which are disposed in the non-display area NDA. - If the
hole injection layer 71, thehole transport layer 72, theelectron transport layer 73 or theelectron injection layer 74 is omitted from the organic light-emittingdisplay device 100, the operation of forming the omitted layer need not be performed. - The forming of the opening OP (operation S40) will now be described with reference to
FIG. 12 .FIG. 12 is a cross-sectional view of the organic light-emittingdisplay device 100, illustrating the forming of the opening OP in the organic layer 70 (operation S40) according to an exemplary embodiment of the present invention. Referring toFIG. 12 , in the forming of the opening OP (operation S40), a voltage may be applied to the auxiliary electrode CB, and heat generated from the auxiliary electrode CB by the voltage applied to the auxiliary electrode CB may cause a portion of thepixel defining layer 60 and a portion of theorganic layer 70 which are adjacent to the auxiliary electrode CB to evaporate, thereby forming the opening OP. The voltage applied to the auxiliary electrode CB may be high enough to generate heat that evaporates thepixel defining layer 60 and theorganic layer 70. The voltage applied to the auxiliary electrode CB may be, for example, 15,000 V or higher. The voltage may be applied to the auxiliary electrode CB by applying different electric potentials to two end portions CBE of the auxiliary electrode CB. The two end portions CBE may be in the non-display areas NDA facing each other. If an electric potential is applied between the two end portions CBE disposed in the non-display areas NDA facing each other, an electric current may flow evenly through all regions of the auxiliary electrode CB. Accordingly, heat may be generated evenly from the auxiliary electrode CB, thereby forming a plurality of openings OP. Each opening OP has substantially the same size with other openings. An electric potential may also be applied between two pad portions (CBP1, CBP2) (that is, two end portions CBE of another type) which are wide and thus may be contacted using a tool for applying electric potentials. - In the method of manufacturing the organic light-emitting
display device 100 according to an exemplary embodiment, the opening OP where the cathode C is connected to the auxiliary electrode CB may be formed by applying a voltage to the auxiliary electrode CB. Therefore, the opening OP may be formed through thehole injection layer 71, thehole transport layer 72, theelectron transport layer 73, and theelectron injection layer 74 without using an etching process. Accordingly, the method of manufacturing the organic light-emittingdisplay device 100 according to an exemplary embodiment does not require the use of a mask in forming thehole injection layer 71, thehole transport layer 72, theelectron transport layer 73 or theelectron injection layer 74 nor in forming the opening OP using an etching process. This may simplify the process of manufacturing an organic light-emitting display device according to an exemplary embodiment. - In the forming of the cathode C (operation S50), the cathode C is formed on the
organic layer 70. The cathode C is electrically connected to the auxiliary electrode CB in the opening OP. The cathode C may be formed on the display area DA without using a mask. The forming of the cathode C (operation S50) may produce the organic light-emittingdisplay device 100 ofFIG. 2 . - An exemplary embodiment of the present invention will now be described with reference to
FIG. 13 .FIG. 13 is a plan view illustrating the arrangement of a plurality of anodes (A1, A2, A3) and an auxiliary electrode CB according to an exemplary embodiment of the present invention. The auxiliary electrode CB may be formed of stripe patterns. The auxiliary electrode CB may include a plurality of straight lines which are separated from each other. End portions CBE of the auxiliary electrode CB may be, but are not limited to, pad portions (CBP1, CBP2). If the auxiliary electrode CB is formed as a plurality of stripe patterns, a voltage may be applied to each of the stripe patterns to form an opening OP in the forming of the opening OP (operation S40). - An exemplary embodiment of the present invention will now be described with reference to
FIGS. 14 and 15 .FIG. 14 is a cross-sectional view of an organic light-emittingdisplay device 101 according to an exemplary embodiment of the present invention.FIG. 15 is an enlarged view of a region XV ofFIG. 14 . A plan view of the organic light-emittingdisplay device 101 according to an exemplary embodiment is substantially the same as that ofFIG. 1 , andFIG. 14 is a cross-sectional view taken along substantially the same line as the line ofFIG. 1 . - Referring to
FIG. 14 , the organic light-emittingdisplay device 101 includes a white organic light-emittinglayer 76 as an organic layer. The white organic light-emittinglayer 76 emits white light at a luminance level corresponding to an electric current flowing therethrough. The white organic light-emittinglayer 76 may contain materials that emit red light, blue light and green light, respectively. An opening OP is formed in the white organic light-emittinglayer 76 and apixel defining layer 60, and an auxiliary electrode CB is exposed through the opening OP. The opening OP will now be described in more detail with reference toFIG. 15 . - Referring to
FIG. 15 , a width d4 of the opening OP at a top surface of the white organic light-emittinglayer 76 is smaller than a width d5 of the opening OP at a bottom surface of the white organic light-emittinglayer 76. When the opening OP is formed in the white organic light-emittinglayer 76 by applying a voltage to the auxiliary electrode CB, the white organic light-emittinglayer 76 is evaporated by heat generated from the auxiliary electrode CB. The white organic light-emittinglayer 76 has a temperature distribution where the temperature is decreased from the auxiliary electrode CB to a top surface of the white organic light-emittinglayer 70. Accordingly, the width d4 of the opening OP at the top surface of the white organic light-emittinglayer 76 is smaller than the width d5 of the opening OP at the bottom surface of the white organic light-emittinglayer 76 which is closer to the auxiliary electrode CB than the top surface of the white organic light-emittinglayer 76. - Referring to
FIG. 14 , the organic light-emittingdisplay device 101 further includes a color filter layer 80. The color filter layer 80 is disposed on a cathode C. The color filter layer 80 includes afirst color filter 81, asecond color filter 82 and athird color filter 83 of different colors. Thefirst color filter 81 is disposed on a first pixel electrode (i.e., a first anode A1), thesecond color filter 82 is disposed on a second pixel electrode (i.e., a second anode A2), and thethird color filter 83 is disposed on a third pixel electrode (i.e., a third anode A3). Thefirst color filter 81 may be, but is not limited to, a red color filter, thesecond color filter 82 may be, but is not limited to, a green color filter, and thethird color filter 83 may be, but is not limited to, a blue color filter. - An exemplary embodiment of the present invention will now be described with reference to
FIGS. 16 through 18 .FIG. 16 is a cross-sectional view of an organic light-emittingdisplay device 102 according to an exemplary embodiment of the present invention.FIG. 17 is an enlarged view of a region XVII ofFIG. 16 .FIG. 18 is a flowchart illustrating the forming of an organic layer according to an exemplary embodiment of the present invention. A plan view of the organic light-emittingdisplay device 102 according to an exemplary embodiment is substantially the same as that ofFIG. 1 , andFIG. 16 is a cross-sectional view taken along substantially the same line as the line II-II′ ofFIG. 1 . - Referring to
FIG. 16 , the organic light-emittingdisplay device 102 includes a first organic light-emittinglayer 77 a, a second organic light-emittinglayer 77 b, and a third organic light-emitting layer 77 c as an organic layer. The first through third organic light-emittinglayers 77 a through 77 c may emit light of different colors. For example, the first organic light-emittinglayer 77 a may emit red light, the second organic light-emittinglayer 77 b may emit green light, and the third organic light-emitting layer 77 c may emit blue light. However, the present invention is not limited thereto. The first organic light-emittinglayer 77 a is disposed on a first anode A1, and the second organic light-emittinglayer 77 b is disposed on a second anode A2. The third organic light-emitting layer 77 c is disposed on the first through third anodes A1 through A3. For example, the first organic light-emittinglayer 77 a and the third organic light-emitting layer 77 c are disposed on the first anode A1, and the second organic light-emittinglayer 77 b and the third organic light-emitting layer 77 c are disposed on the second anode A2. Since regions of the third organic light-emitting layer 77 c which are disposed on the first anode A1 and the second anode A2 do not emit light, the colors of light emitted from a first pixel P1 and a second pixel P2 are not affected from the third organic light-emitting layer 77 c. - An opening OP is formed in the third organic light-emitting layer 77 c and a
pixel defining layer 60. An auxiliary electrode CB is exposed through the opening OP, and the auxiliary electrode CB is electrically connected to a cathode C. The opening OP will now be described in more detail with reference toFIG. 17 . Referring toFIG. 17 , a width d6 of the opening OP at a top surface of the third organic light-emitting layer 77 c is smaller than a width d7 of the opening OP at a bottom surface of the third organic light-emitting layer 77 c. When the opening OP is formed in the third organic light-emitting layer 77 c by applying a voltage to the auxiliary electrode CB, the third organic light-emitting layer 77 c is evaporated by heat generated from the auxiliary electrode CB. Theorganic layers 77 a to 77 c have a temperature distribution where the temperature is decreased from the auxiliary electrode CB to a top surface of the third organic light-emitting layer 77 c. Accordingly, the width d6 of the opening OP at the top surface of the third organic light-emitting layer 77 c is smaller than the width d7 of the opening OP at the bottom surface of the third organic light-emitting layer 77 c which is closer to the auxiliary electrode CB than the top surface of the third organic light-emitting layer 77 c. - A method of forming the organic layer of the organic light-emitting
display device 102 will now be described with reference toFIG. 18 . Referring toFIG. 18 , the forming of the organic layer (operation S30) includes forming the first organic light-emittinglayer 77 a and the second organic light-emittinglayer 77 b (operation S36) and forming the third organic light-emitting layer 77 c (operation S37). - In the forming of the first organic light-emitting
layer 77 a and the second organic light-emittinglayer 77 b (operation S36), the first organic light-emittinglayer 77 a is formed on the first anode A1, and the second organic light-emittinglayer 77 b is formed on the second anode A2 using an inkjet printing method or a deposition method using a mask. - In the forming of the third organic light-emitting layer 77 c (operation S37), the third organic light-emitting layer 77 c is formed on a display area DA without using a mask.
- Alternatively, the first and second organic light-emitting
layers layer 77 a and the second organic light-emittinglayer 77 b (operation S36). - According to an exemplary embodiment, the process of manufacturing an organic light-emitting display device may be simplified without using a mask for forming organic layer and/or an opening in the organic layer. In addition, an auxiliary electrode may reduce a voltage drop due to internal resistance of a cathode.
- While the present inventive concept has been shown and described with reference to exemplary embodiments thereof, it will be apparent to those of ordinary skill in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the inventive concept as defined by the following claims.
Claims (20)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/619,295 US9287531B2 (en) | 2013-07-04 | 2015-02-11 | Organic light-emitting display device and method of manufacturing the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2013-0078420 | 2013-07-04 | ||
KR1020130078420A KR102131248B1 (en) | 2013-07-04 | 2013-07-04 | Organic light emitting display device and method of manufacturing the same |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/619,295 Division US9287531B2 (en) | 2013-07-04 | 2015-02-11 | Organic light-emitting display device and method of manufacturing the same |
Publications (2)
Publication Number | Publication Date |
---|---|
US20150008398A1 true US20150008398A1 (en) | 2015-01-08 |
US9024307B2 US9024307B2 (en) | 2015-05-05 |
Family
ID=52132162
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/224,707 Active US9024307B2 (en) | 2013-07-04 | 2014-03-25 | Organic light-emitting display device and method of manufacturing the same |
US14/619,295 Active US9287531B2 (en) | 2013-07-04 | 2015-02-11 | Organic light-emitting display device and method of manufacturing the same |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/619,295 Active US9287531B2 (en) | 2013-07-04 | 2015-02-11 | Organic light-emitting display device and method of manufacturing the same |
Country Status (4)
Country | Link |
---|---|
US (2) | US9024307B2 (en) |
KR (1) | KR102131248B1 (en) |
CN (2) | CN110112197B (en) |
TW (1) | TWI655762B (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9455303B2 (en) * | 2014-06-30 | 2016-09-27 | Shanghai Tianma AM-OLED Co., Ltd. | White organic light emitting device |
US20160293888A1 (en) * | 2015-04-02 | 2016-10-06 | Lg Display Co., Ltd. | Auxiliary Lines Reducing Resistance In A Cathode Of An Organic Light Emitting Display Device |
US20160359136A1 (en) * | 2014-11-28 | 2016-12-08 | Boe Technology Group Co., Ltd. | Organic light-emitting diode display substrate, its manufacturing method and display device |
US20160365532A1 (en) * | 2014-12-30 | 2016-12-15 | Boe Technology Group Co., Ltd. | Display substrate and manufacturing method thereof, display panel and mask |
US9543544B2 (en) * | 2015-05-28 | 2017-01-10 | Lg Display Co., Ltd. | Organic light emitting display |
US20170170198A1 (en) * | 2015-08-05 | 2017-06-15 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Array Substrate And Manufacturing Method Thereof |
US20180122878A1 (en) * | 2016-10-31 | 2018-05-03 | Lg Display Co., Ltd. | Organic light-emitting display device having a repair area |
KR20180062228A (en) * | 2016-11-30 | 2018-06-08 | 엘지디스플레이 주식회사 | Organic Light Emitting Display device having an organic light emitting layer |
WO2020206824A1 (en) * | 2019-04-11 | 2020-10-15 | 深圳市华星光电半导体显示技术有限公司 | Organic light-emitting diode display and method for manufacturing same |
US10971551B2 (en) * | 2017-06-21 | 2021-04-06 | Boe Technology Group Co., Ltd. | Organic light-emitting diode display panel and manufacturing method therefor, and display apparatus |
US11164921B2 (en) * | 2018-12-13 | 2021-11-02 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Array substrate, method of manufacturing thereof, and display device |
US20220336556A1 (en) * | 2020-06-19 | 2022-10-20 | Boe Technology Group Co., Ltd. | Display substrate and manufacturing method therefor, and display device |
US11917877B2 (en) * | 2019-12-30 | 2024-02-27 | Lg Display Co., Ltd. | Display device with auxiliary electrode in trench |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102531132B1 (en) * | 2015-07-29 | 2023-05-10 | 엘지디스플레이 주식회사 | Thin Film Transistor Array Substrate And Organic Light Emitting Diode Display Device Including The Same |
US10270033B2 (en) | 2015-10-26 | 2019-04-23 | Oti Lumionics Inc. | Method for patterning a coating on a surface and device including a patterned coating |
KR102332324B1 (en) * | 2016-01-20 | 2021-12-01 | 한국전자통신연구원 | Methods for manufacturing an integrated substrate for organic light emitting device, an organic light emitting device, and methods for manufacturing an organic light emitting device |
US10243175B2 (en) * | 2016-02-02 | 2019-03-26 | Samsung Display Co., Ltd. | Organic light-emitting apparatus fabricated using a fluoropolymer and method of manufacturing the same |
CN118215323A (en) | 2016-12-02 | 2024-06-18 | Oti照明公司 | Device comprising a conductive coating disposed over an emission region and method thereof |
CN106856203B (en) * | 2016-12-27 | 2020-02-07 | Tcl集团股份有限公司 | Top-emitting display light-emitting device and preparation method thereof |
CN110785867B (en) | 2017-04-26 | 2023-05-02 | Oti照明公司 | Method for patterning a surface coating and apparatus comprising a patterned coating |
WO2018211460A1 (en) | 2017-05-17 | 2018-11-22 | Oti Lumionics Inc. | Method for selectively depositing a conductive coating over a patterning coating and device including a conductive coating |
CN107527941B (en) * | 2017-08-31 | 2019-09-17 | 维信诺科技股份有限公司 | A kind of organic light emitting display and its manufacturing method |
CN107681062B (en) * | 2017-09-25 | 2019-06-28 | 京东方科技集团股份有限公司 | Organic electroluminescent display substrate and preparation method thereof, display device |
KR102540734B1 (en) * | 2018-02-01 | 2023-06-08 | 삼성디스플레이 주식회사 | Organic light emitting display apparatus and method of manufacturing thereof |
US11751415B2 (en) | 2018-02-02 | 2023-09-05 | Oti Lumionics Inc. | Materials for forming a nucleation-inhibiting coating and devices incorporating same |
JP7320851B2 (en) | 2018-05-07 | 2023-08-04 | オーティーアイ ルミオニクス インコーポレーテッド | Methods for providing auxiliary electrodes and devices containing auxiliary electrodes |
CN116456753A (en) | 2019-03-07 | 2023-07-18 | Oti照明公司 | Optoelectronic device |
KR20220009961A (en) | 2019-04-18 | 2022-01-25 | 오티아이 루미오닉스 인크. | Material for forming nucleation inhibiting coating and device comprising same |
KR20220017918A (en) | 2019-05-08 | 2022-02-14 | 오티아이 루미오닉스 인크. | Material for forming nucleation inhibiting coating and device comprising same |
CN110416262B (en) * | 2019-05-09 | 2021-09-28 | 京东方科技集团股份有限公司 | OLED display screen, display panel and manufacturing method thereof |
US11832473B2 (en) | 2019-06-26 | 2023-11-28 | Oti Lumionics Inc. | Optoelectronic device including light transmissive regions, with light diffraction characteristics |
JP7386556B2 (en) | 2019-06-26 | 2023-11-27 | オーティーアイ ルミオニクス インコーポレーテッド | Optoelectronic devices containing optically transparent regions with applications related to optical diffraction properties |
KR20220045202A (en) | 2019-08-09 | 2022-04-12 | 오티아이 루미오닉스 인크. | Optoelectronic Device Including Auxiliary Electrodes and Partitions |
WO2022123431A1 (en) | 2020-12-07 | 2022-06-16 | Oti Lumionics Inc. | Patterning a conductive deposited layer using a nucleation inhibiting coating and an underlying metallic coating |
CN114824134A (en) * | 2022-04-20 | 2022-07-29 | 深圳市华星光电半导体显示技术有限公司 | Display panel and preparation method thereof |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050179374A1 (en) * | 2004-02-14 | 2005-08-18 | Won-Kyu Kwak | Organic electro-luminescent display device and method of manufacturing the same |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI257496B (en) * | 2001-04-20 | 2006-07-01 | Toshiba Corp | Display device and method of manufacturing the same |
SG143063A1 (en) * | 2002-01-24 | 2008-06-27 | Semiconductor Energy Lab | Light emitting device and method of manufacturing the same |
KR100539256B1 (en) | 2004-03-31 | 2005-12-27 | 삼성전자주식회사 | Hi-Fix pogo ring jig of test head of semiconductor tester and maintenance method using the same |
KR100647599B1 (en) | 2004-04-08 | 2006-11-23 | 삼성에스디아이 주식회사 | Organic electro-luminescent display device and fabricating the same |
KR100700643B1 (en) * | 2004-11-29 | 2007-03-27 | 삼성에스디아이 주식회사 | Organic Electroluminescence Display Device Having Auxiliary Electrode Line and Fabricating of the same |
KR100721569B1 (en) * | 2004-12-10 | 2007-05-23 | 삼성에스디아이 주식회사 | Organic Electroluminescence Device Having Color Filter Layer |
KR100643404B1 (en) * | 2005-09-22 | 2006-11-10 | 삼성전자주식회사 | Display device and manufacturing method of the same |
CN102881713B (en) * | 2006-06-19 | 2016-05-25 | 株式会社日本有机雷特显示器 | Luminous display unit and manufacture method thereof |
JP5008606B2 (en) * | 2007-07-03 | 2012-08-22 | キヤノン株式会社 | Organic EL display device and manufacturing method thereof |
GB2454867B (en) | 2007-11-09 | 2010-02-03 | Cambridge Display Tech Ltd | Electroluminescent devices comprising bus bar |
KR101372851B1 (en) * | 2008-07-11 | 2014-03-12 | 삼성디스플레이 주식회사 | Organic light emitting display apparatus |
JP5035198B2 (en) * | 2008-09-26 | 2012-09-26 | 大日本印刷株式会社 | Organic electroluminescence device and method for producing the same |
KR101572264B1 (en) | 2009-05-27 | 2015-11-27 | 엘지디스플레이 주식회사 | Organic Light Emitting Display Device and Manufacturing Method of the same |
WO2011045911A1 (en) * | 2009-10-15 | 2011-04-21 | パナソニック株式会社 | Display panel device and method for manufacturing same |
KR101779475B1 (en) * | 2010-06-22 | 2017-09-19 | 엘지디스플레이 주식회사 | Organic electro-luminescence device and method for fabricating of the same |
KR101889918B1 (en) * | 2010-12-14 | 2018-09-21 | 삼성디스플레이 주식회사 | Organinc light emitting display device and manufacturing method for the same |
KR101810047B1 (en) * | 2011-07-28 | 2017-12-19 | 삼성디스플레이 주식회사 | Organic light emitting display device and manufacturing method of the same |
WO2013038971A1 (en) * | 2011-09-12 | 2013-03-21 | シャープ株式会社 | Light-emitting device, display device and lighting device |
KR101901574B1 (en) * | 2011-12-21 | 2018-09-28 | 엘지디스플레이 주식회사 | Organic light emitting display device and method for fabricating the same |
-
2013
- 2013-07-04 KR KR1020130078420A patent/KR102131248B1/en active IP Right Grant
-
2014
- 2014-03-25 US US14/224,707 patent/US9024307B2/en active Active
- 2014-04-30 TW TW103115617A patent/TWI655762B/en active
- 2014-07-04 CN CN201910418561.6A patent/CN110112197B/en active Active
- 2014-07-04 CN CN201410317497.XA patent/CN104282723B/en active Active
-
2015
- 2015-02-11 US US14/619,295 patent/US9287531B2/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050179374A1 (en) * | 2004-02-14 | 2005-08-18 | Won-Kyu Kwak | Organic electro-luminescent display device and method of manufacturing the same |
Cited By (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9455303B2 (en) * | 2014-06-30 | 2016-09-27 | Shanghai Tianma AM-OLED Co., Ltd. | White organic light emitting device |
US10205117B2 (en) * | 2014-11-28 | 2019-02-12 | Boe Technology Group Co., Ltd. | Organic light-emitting diode display substrate having auxiliary electrodes to mitigate an internal resistance drop, method for manufacturing the same and display device |
US20160359136A1 (en) * | 2014-11-28 | 2016-12-08 | Boe Technology Group Co., Ltd. | Organic light-emitting diode display substrate, its manufacturing method and display device |
US9831461B2 (en) * | 2014-12-30 | 2017-11-28 | Boe Technology Group Co., Ltd. | Display substrate and manufacturing method thereof, display panel and mask |
US20160365532A1 (en) * | 2014-12-30 | 2016-12-15 | Boe Technology Group Co., Ltd. | Display substrate and manufacturing method thereof, display panel and mask |
CN106057844B (en) * | 2015-04-02 | 2019-01-08 | 乐金显示有限公司 | Reduce the auxiliary line of the resistance in the cathode of organic light-emitting display device |
US9748318B2 (en) * | 2015-04-02 | 2017-08-29 | Lg Display Co., Ltd. | Auxiliary lines reducing resistance in a cathode of an organic light emitting display device |
US20160293888A1 (en) * | 2015-04-02 | 2016-10-06 | Lg Display Co., Ltd. | Auxiliary Lines Reducing Resistance In A Cathode Of An Organic Light Emitting Display Device |
CN106057844A (en) * | 2015-04-02 | 2016-10-26 | 乐金显示有限公司 | Auxiliary lines reducing resistance in a cathode of an organic light emitting display device |
US20170054113A1 (en) * | 2015-05-28 | 2017-02-23 | Lg Display Co., Ltd. | Organic light emitting display apparatus and method of manufacturing the same |
US9825262B2 (en) * | 2015-05-28 | 2017-11-21 | Lg Display Co., Ltd. | Organic light emitting display apparatus and method of manufacturing the same |
US9543544B2 (en) * | 2015-05-28 | 2017-01-10 | Lg Display Co., Ltd. | Organic light emitting display |
US20170170198A1 (en) * | 2015-08-05 | 2017-06-15 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Array Substrate And Manufacturing Method Thereof |
US9899425B2 (en) * | 2015-08-05 | 2018-02-20 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Array substrate and manufacturing method thereof |
US10134820B2 (en) * | 2016-10-31 | 2018-11-20 | Lg Display Co., Ltd. | Organic light-emitting display device having a repair area |
US20180122878A1 (en) * | 2016-10-31 | 2018-05-03 | Lg Display Co., Ltd. | Organic light-emitting display device having a repair area |
KR20180062228A (en) * | 2016-11-30 | 2018-06-08 | 엘지디스플레이 주식회사 | Organic Light Emitting Display device having an organic light emitting layer |
KR102705030B1 (en) * | 2016-11-30 | 2024-09-09 | 엘지디스플레이 주식회사 | Organic Light Emitting Display device having an organic light emitting layer |
US10971551B2 (en) * | 2017-06-21 | 2021-04-06 | Boe Technology Group Co., Ltd. | Organic light-emitting diode display panel and manufacturing method therefor, and display apparatus |
US11164921B2 (en) * | 2018-12-13 | 2021-11-02 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Array substrate, method of manufacturing thereof, and display device |
WO2020206824A1 (en) * | 2019-04-11 | 2020-10-15 | 深圳市华星光电半导体显示技术有限公司 | Organic light-emitting diode display and method for manufacturing same |
US11917877B2 (en) * | 2019-12-30 | 2024-02-27 | Lg Display Co., Ltd. | Display device with auxiliary electrode in trench |
US20220336556A1 (en) * | 2020-06-19 | 2022-10-20 | Boe Technology Group Co., Ltd. | Display substrate and manufacturing method therefor, and display device |
Also Published As
Publication number | Publication date |
---|---|
KR20150005099A (en) | 2015-01-14 |
US9287531B2 (en) | 2016-03-15 |
US20150155527A1 (en) | 2015-06-04 |
CN104282723A (en) | 2015-01-14 |
KR102131248B1 (en) | 2020-07-08 |
CN104282723B (en) | 2019-06-14 |
TW201515208A (en) | 2015-04-16 |
CN110112197B (en) | 2024-08-13 |
CN110112197A (en) | 2019-08-09 |
TWI655762B (en) | 2019-04-01 |
US9024307B2 (en) | 2015-05-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9024307B2 (en) | Organic light-emitting display device and method of manufacturing the same | |
US10541288B2 (en) | Flexible organic electroluminescent device and method for fabricating the same | |
KR102090703B1 (en) | Organinc light emitting display device and manufacturing method for the same | |
KR102448611B1 (en) | Organic light emitting display | |
US9246123B2 (en) | Organic light-emitting display device and method of manufacturing the same | |
US9627457B2 (en) | Organic light emitting display device and method of manufacturing the same | |
JP6211873B2 (en) | Organic EL display device and method of manufacturing organic EL display device | |
KR102664048B1 (en) | Organic light emitting display device | |
US8330353B2 (en) | Organic light emitting device and manufacturing method thereof | |
KR102512713B1 (en) | Organic light emitting display device and method of manufacturing the same | |
TWI514561B (en) | Amoled | |
KR102139677B1 (en) | Flexible organic electroluminescent device and method for fabricating the same | |
KR20210094499A (en) | Display device and manufacturing method thereof | |
KR20210025567A (en) | Electroluminescent display device | |
KR20120069312A (en) | Organic light emitting diode display | |
JP2009094347A (en) | Organic el display device | |
KR20110035049A (en) | Organic electro-luminescence device and method for fabricating of the same | |
JP6223070B2 (en) | Organic EL display device and method of manufacturing organic EL display device | |
WO2019156024A1 (en) | Display device | |
JPWO2019186809A1 (en) | Organic EL display device and method of manufacturing organic EL display device | |
KR20190091395A (en) | Organic light emitting display device | |
JP2010085866A (en) | Active matrix type display device | |
JP5478954B2 (en) | Organic electroluminescence display device | |
KR102591727B1 (en) | Electrostatic protection diode and organic light emitting display device including electrostatic protection structure | |
KR20150098272A (en) | Organic light emitting display device and method of manufacturing the same |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: SAMSUNG DISPLAY CO., LTD., KOREA, REPUBLIC OF Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LEE, KWAN HEE;REEL/FRAME:032520/0295 Effective date: 20140317 |
|
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Year of fee payment: 4 |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Year of fee payment: 8 |